h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 356
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h8s-2161b
Manufacturer Part Number
h8s-2161b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2161B.pdf
(845 pages)
- Current page: 356 of 845
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Section 12 8-Bit Timer (TMR)
12.5
12.5.1
Figure 12.4 shows the TCNT count timing with an internal clock source. Figure 12.5 shows the
TCNT count timing with an external clock source. The pulse width of the external clock signal
must be at least 1.5 system clocks ( ) for a single edge and at least 2.5 system clocks ( ) for both
edges. The counter will not increment correctly if the pulse width is less than these values.
Rev. 3.00 Mar 21, 2006 page 302 of 788
REJ09B0300-0300
Internal clock
TCNT input
clock
TCNT
External clock
input pin
TCNT input
clock
TCNT
Operation Timing
TCNT Count Timing
Figure 12.5 Count Timing for External Clock Input (Both Edges)
Figure 12.4 Count Timing for Internal Clock Input
N – 1
N – 1
N
N
N + 1
N + 1
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